@book { Etudesdelinguistiquemdivale,
    title = "Etudes de linguistique médiévale",
    author = "Roger {Bellon}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05680-8",
    url = "https://www.peterlang.com/document/1048059"
}